Britney Spears Is Doing Backflips While Listening to Justin Timberlake — What Year Is It Again?

It's plain to see, Britney Spears has got moves, but did you think her music motivation would be her ex Justin Timberlake? Color me surprised. A decade-and-a-half after the iconic Hollywood couple split, Britney spent her Saturday doing flips in the outdoors, and Justin's song "LoveStoned/I Think She Knows Interlude" from FutureSex/LoveSounds played in the background.